Summary
In this chapter, an Arduino-SNAP circuit AM radio prototype was built:
- A discussion on radio communication basics was presented
- Modulation is a radio wave processing technique in which two distinct frequencies are superimposed to produce one unique signal, and it was presented in this chapter as well
- The UTC 7642 linear amplifier IC was introduced along with its internal circuit schematic diagram and device pictorial diagram
- This IC, with the ability to boost high-frequency signals, is the heart of the SNAP circuit AM radio
- The IR remote trigger circuit was discussed using a picture diagram.
- The IR remote sensor provides logic level voltages that allow the Arduino to operate the LCD and SNAP circuit AM radio
- To aid in the ON/OFF control of the SNAP circuit AM radio, a littleBits latch was introduced
- A latch is a digital circuit that provides a stable logic level voltage (0V or +5V) based on the device being triggered by a positive edge input signal
To test the IR remote trigger circuit...
